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60-hole SCR denitration catalyst module and preparation method thereof

A denitrification catalyst and catalyst technology, applied in the direction of catalyst activation/preparation, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of low mechanical strength, small specific surface area, waste of production resources, etc., and achieve low equipment maintenance costs , high mechanical strength, and the effect of promoting development

Inactive Publication Date: 2018-07-17
BEIJING GUODIAN LONGYUAN ENVIRONMENTAL ENG +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a 60-hole SCR denitrification catalyst module and its preparation method, to solve the problem that conventional denitrification catalysts have small specific surface area, low activity per unit volume, large application area, and denitrification catalysts with more than 50 holes are easy to extrude. Cracks or easy bonding to the mold, low molding rate and low mechanical strength, resulting in waste of production resources and increased cost technical problems

Method used

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  • 60-hole SCR denitration catalyst module and preparation method thereof
  • 60-hole SCR denitration catalyst module and preparation method thereof
  • 60-hole SCR denitration catalyst module and preparation method thereof

Examples

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Effect test

Embodiment 1

[0045] Denitrate titanium tungsten powder (d90≤1.5μm, specific surface area≥100cm 2 / g) Put into the mixing kneader, then add the ammonium metavanadate and glass fiber to the denitrated titanium tungsten powder, turn on the mixing kneader, and slowly stir for 30 minutes; add deionized water, Polyethylene glycol, tung oil and carboxymethyl cellulose, continue to stir quickly until the mud has no graininess when touched, and the moisture content is 30%, stop stirring; add ammonia water to adjust the pH to 7.5, continue to stir for 15 minutes; Take out the material from the mixing kneader, wrap it with plastic film, put it in a closed material box, and place the closed material box in an environment without sunlight for about 48 hours; remove the mud from the closed material box Take out, remove the plastic film, and put it into the silo of the vacuum twin-shaft extruder, make the mud pass through the filter screen at the outlet of the vacuum twin-shaft extruder, and store the filt...

Embodiment 2

[0047] Denitrate titanium tungsten powder (d90≤1.5μm, specific surface area≥100cm 2 / g) Put it into the mixing kneader, then add ammonium metavanadate, asbestos fiber and glass fiber to the denitrated titanium tungsten powder, turn on the mixing kneader, and slowly stir for 30 minutes until the mixture is uniform; in the mixer, Add deionized water, polyethylene glycol, polyvinyl alcohol, glycerin, carboxymethyl cellulose, and polyethylene oxide respectively, and continue to stir quickly until the mud has no graininess when touched and the moisture content is 30%. Stop stirring; add ammonia water to adjust the pH to 7.5 and continue stirring for 15 minutes; remove the mud from the kneader, wrap it with plastic film, and put it in a closed bin, and place the bin in an environment without sunlight for approximately 48 hours; take the mud out of the closed material box, remove the plastic film, and then put it into the silo of the vacuum twin-shaft extruder, let the mud pass through...

Embodiment 3

[0049] Denitrate titanium tungsten powder (d90≤1.5μm, specific surface area≥100cm 2 / g) Put into the mixing kneader, then add ammonium metavanadate, asbestos fiber, glass fiber and mineral fiber to the denitrated titanium tungsten powder, turn on the mixing kneader, and slowly stir for 30 minutes until the mixture is uniform; In the machine, add deionized water, polyethylene glycol, polyvinyl alcohol, tung oil and polyethylene oxide respectively, and continue to stir quickly until the mud does not feel granular when touched and the moisture content is 30%, stop stirring; Add ammonia water to adjust the pH to 7.8, and continue to stir for 15 minutes; remove the mud from the kneader, wrap it with plastic film, and put it in a closed bin, and place the bin in an environment without sunlight for about 48 hours; Take out the mud from the closed material box, remove the plastic film, and put it into the silo of the vacuum twin-shaft extruder, make the mud pass through the filter scree...

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Abstract

The invention provides a 60-hole SCR denitration catalyst module and a preparation method thereof. The number of holes in the cross section of the 60-hole SCR denitration catalyst module is 60*60, the60-hole SCR denitration catalyst module is prepared from, by weight, 50-60 parts of denitrified titanium tungsten powder, 0.5-1 part of ammonium metavanadate, 1-2.5 parts of plasticizer, 0.20-0.6 part of flexibilizer, 1-2 parts of release agent, 1-1.5 parts of thickener and 33.4-42.5 parts of deionized water. The 60-hole SCR denitration catalyst module is high in molding rate, high in mechanicalstrength, large in geometric proportion specific area, high in denitration efficiency, low in requirement for equipment, low in equipment maintenance cost and capable of saving the cost.

Description

Technical field [0001] The invention relates to the technical field of SCR denitration catalysts, in particular to an SCR denitration catalyst module and a preparation method thereof. Background technique [0002] Selective Catalytic Reduction (SCR) denitration technology is an efficient, reliable and mature flue gas denitration technology, which is widely used in flue gas denitration systems at home and abroad. SCR denitration catalyst is the core of this technology. 2 O 5 ~WO 3 (MoO 3 ) / TiO 2 Catalyst is currently the most widely used catalyst in the world. [0003] The common specifications of denitration catalysts for gas and oil-fired units are generally 30 holes, 35 holes, 40 holes, 50 holes, 55 holes and above (calculated based on the number of holes on a single side of the section 15cm). The 30-hole, 35-hole, and 40-hole denitration catalysts have relatively low specific surface area, low activity per unit volume, large application area, and high denitration cost. Denitrat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/30B01J35/10B01D53/90B01D53/56
CPCB01D53/8628B01D53/90B01J23/30B01J37/0009B01J35/618B01J35/60
Inventor 肖雨亭唐坚赵喆路光杰杨建辉陆金丰周凤翔徐光辉
Owner BEIJING GUODIAN LONGYUAN ENVIRONMENTAL ENG
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